Skip to content

Music theory definition

Harmonic function

A chord's job in a progression: tonic (home), predominant (away), or dominant (pulling home).

Three jobs

Every has a :

Learn it in context

This term is introduced in Unit 9: Diatonic harmony. Work through the explanations and exercises to connect the definition with music.

Explore with an interactive tool

Harmony
The way notes sound together and how groups of notes move from one to the next.
Diatonic
Belonging to the current key - using only its seven notes.
Chromatic
Using notes outside the current key.
Roman numeral
A label for a chord by its scale degree: I, ii, V… Uppercase is major, lowercase minor.
Predominant
Chords like IV and ii that lead toward the dominant.
Browse all music theory terms